HVDC transmission lines

NorNed is a long high-voltage direct current submarine power cable between Feda, Norway and the seaport of Eemshaven in the Netherlands, which interconnects both countries' electrical grids. It was once the longest submarine power cable in the world. Budgeted at €550 million, and completed at a cost of €600m, the NorNed cable is a bipolar HVDC link with a voltage of ±450 kV and a capacity of 700 MW. NorNed is a joint project of the Norwegian transmission system operator Statnett and its Dutch counterpart TenneT. The cable system itself and the two converter stations were produce

subsea high-voltage direct current electricity cable transmission line between Norway and Great Britain

Estlink is a set of HVDC submarine power cables between Estonia and Finland. Estlink 1 was the first interconnection between the Baltic and Nordic electricity markets followed by Estlink 2 in 2014. The main purpose of the Estlink connection is to secure power supply in both regions to integrate the Baltic and Nordic energy markets.

NordLink is a subsea 1,400 megawatt (MW) HVDC power cable between Norway and Germany, opened in May 2021. The long line operates at a voltage of 500 kV DC. It consists of 54 kilometres long land cable in Schleswig-Holstein, Germany, a 516 kilometres long submarine cable between Germany and Norway and a 53 kilometres long overhead line with 140 towers in Norway.

planned interconnector to link Greek, Cypriot and Israeli power grids via the world's longest submarine power cable

Fenno–Skan is the designation of the high voltage direct current transmission between Dannebo in Sweden and Rauma in Finland.

HVDC transmission lines between Denmark and Norway

NordBalt (also formerly known as SwedLit) is a submarine power cable between Klaipėda in Lithuania and Nybro in Sweden, operating since 2015. The purpose of the cable is to facilitate the trading of power between the Baltic and Nordic electricity markets, and to increase the supply and energy security in both markets.

BritNed is a 1,000MW high-voltage direct-current (HVDC) submarine power cable between the Isle of Grain in Kent, the United Kingdom; and Maasvlakte in Rotterdam, the Netherlands.

The Kontek HVDC is a long, monopolar 400 kV high-voltage direct current cable between Germany and the Danish island Zealand. Its name comes from "continent" and the name of the former Danish power transmission company "Elkraft", which operated the power grid on the Danish islands Lolland, Falster and Zealand and had the abbreviation "ek". As of today, the cable is operated by Energinet.dk in Denmark and 50Hertz Transmission GmbH in Germany.

SwePol is a -long monopolar high-voltage direct current (HVDC) submarine cable between the Stärnö peninsula near Karlshamn, Sweden, and Bruskowo Wielkie, near Słupsk, Poland. The link was inaugurated in 2000 and can transmit up to 600 MW power at a voltage of 450 kV.

electricity infrastructure project

HVDC power transmission system in Mozambique and South Africa

COBRAcable (COpenhagen-BRussels-Amsterdam cable) is a ±320 kV, 700 MW HVDC submarine power cable pair between Eemshaven, the Netherlands and Endrup near Esbjerg, Denmark. The cable is jointly owned by Energinet.dk and TenneT. Its purpose is to improve the European transmission grid and thus increase the amount of variable wind power in the system while improving supply reliability. Its 700 MW capacity corresponds to an annual transmission capacity of 6.1 TWh.

Submarine power cable between the UK and Denmark

Konti–Skan (also known as Kontiskan) is the name of high-voltage direct-current transmission line between Denmark (DK1) and Sweden (SE3).

Powerline between Volgograd, Russia and Donbas, Ukraine

HVDC interconnection between Italy and Greece

HVDC overhead power line in the Democratic Republic of Congo

HVDC interconnector between Belgium and the United Kingdom

HVDC power line between Sweden and Germany

first commercial static high voltage direct current transmission system

submarine power cable between Spain and Morocco

HVDC overhead power line in China

power transmission line between Corsica, Sardinia and mainland Italy

power line between France and Ireland

SAPEI, is a high-voltage direct current power transmission system that connects Sardinia with the Italian mainland. The submarine cable from Fiume Santo to Latina runs at below sea level in the Tyrrhenian Sea. It is the deepest submarine power cable in the world. The cable is owned and operated by Terna.